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First Descendant
Warden and Arcanist are the best Stamina Healers. There is nothing you can‘t do which Magicka Healer can. We use the same sets, but the play style is different as we use martial weapons for healing (Bow and/or Greatsword) and de-buffs (DW and 1H&S).
There is no point running full Healer setup as basically the vast majority of Group Dungeons can be done with 1T/3DD combo and self heals. That's why only the front bar provides support & healing, and the back bar is for damage.
Normal difficulty (quests, pledges, random daily) - equip 
Thunderous Volley (aka Maelstrom Bow) on the back bar and replace 
Traveling Knife with 
Endless Hail. Replace 
Energy Orb on the front bar with any good damage skill like 
Subterranean Assault, 
Growing Swarm, 
Stampede or 
Carve.
Monster sets: 
Ozezan the Inferno, 
Symphony of Blades and 
Nazaray are all good depending on situation. 
Sentinel of Rkugamz is the best for beginner.
Alternative body set: 
Powerful Assault is great for trash encounters, and if you don't have 
War Machine, use it all the time. Unfortunately Stamina Healer/Support set 
Phoenix Moth Theurge is useless in PvE as it triggers on healing and not overhealing plus Minor Force is useless, too as it's easily sourced by DDs. If ZOS one day changes to triggers on overhealing and to provide Minor Berserk instead Minor Force, or replace both Minor buffs with Major Courage, it would become the Stamina version of Spell Power Cure.
